Radioactivity and Atomic Structure

What is the mass number of this isotope?

• 131

• 53

• 184

• 78

Tags

NGSS.HS-PS1-8

How many protons does this isotope have?

• 131

• 53

• 184

• 78

How many neutrons does this isotope have?

• 131

• 53

• 184

• 78

Tags

NGSS.HS-PS1-8

An alpha particle is made up of

• 2 protons and 4 neutrons

• 1 proton and 1 neutron

• 2 protons and 2 neutrons

• 4 protons and 2 neutrons

Tags

NGSS.HS-PS1-8

Which type of nuclear radiation can be stopped by a sheet of paper?

• Alpha

• Beta

• Gamma

When a substance undergoes beta decay

• The atomic number increases by 1

• The atomic number decreases by 2

• The atomic number does not change

Tags

NGSS.HS-PS1-8

An isotope of an element has the same number of _________, but a different number of _________.

• Protons, electrons
• Protons, neutrons
• Electrons, neutrons

Tags

NGSS.HS-PS1-8

What type of radioactive decay is shown here?

• Alpha decay
• Beta decay
• Gamma decay

Tags

NGSS.HS-PS1-8

Which type of radiation releases an electron?

• Alpha radiation
• Beta radiation
• gamma radiation

Tags

NGSS.HS-PS1-8

What type of radiation can be stopped by clothing or a piece of paper?

• Alpha radiation
• Beta radiation
• gamma radiation